Is it a good idea to use Marvel Mystery Oil on a lawn mower or small 2 stroke outboard marine motor in the cylinder for winter storage. Some small engine manufactures recommend putting a tablespoon of oil in the cylinder if its going to sit all winter.

Yes, Marvel Mystery Oil can be used for winter storage of small 2-cycle and 2-cylinder engines. Use a tablespoon in each cylinder and rotate by hand to distribute the oil. This protects the engine from moisture and corrosion durin storage and makes for easier start up in the spring.